package com.yy.anno2;

public class Calculator {
    public void add(){
        System.out.println("(1+0) = " + (1+0));
    }
    public void sub(){
        System.out.println("(1-0) = " + (1-0));
    }
    public void mul(){
        System.out.println("(1*0) = " + (1*0));
    }
    public void div(){
        System.out.println("(1/0) = " + (1/0));
    }
    public void show(){
        System.out.println("永无bug");
    }
}
